The medley was intense, thoughtful and emotional, to say the least — especially during the performance of his outstanding single “Stan,” from 2000’s The Marshall Mathers LP in 2000. Skylar’s voice and piano playing brought an angelic, calm presence to the stage. Mr. Porter, former member of D12 band, also joined the rapper on stage.

Check out the performances below, which also include the Recovery highlight “Won’t Back Down” (originally featuring P!nk) and “Berzerk,” lead single from 2013’s The Marshall Mathers LP2.